A fusiform anti-buckling brace

Abstract

The invention relates to a fusiform anti-buckling support and belongs to the technical field of structural engineering. The fusiform anti-buckling support is composed of a cross-shaped inner core component and a peripheral fusiform steel pipe concrete constraint component. The cross sections of the portions, at the supporting ends, of a fusiform constraint steel pipe is minimum, the cross sections of the portions, far away from the ends, of the fusiform constraint steel pipe gradually increase evenly, and the cross section of the supporting middle of the fusiform constraint steel pipe is maximum. Round steel pipes or square steel pipes can be adopted as the fusiform constraint steel pipe, two frustum-shaped steel pipes are welded in an opposite buckled mode to form the fusiform constraint steel pipe, and concrete is poured into the fusiform constraint steel pipe. According to the fusiform anti-buckling support, when the peripheral component is extruded by the inner core, the bending moment of the middle cross section of the component is large, the bending moment of the end cross sections of the component is small, and at the same time, the middle bending rigidity of the fusiform constraint component is large, which is consistent with the internal force distribution rule of the fusiform constraint component. Compared with an equal-cross-section peripheral constraint component, although the middle cross section of the fusiform constraint component may be slightly increased, the size of the cross sections close to the ends is remarkably reduced, the dead weight of the whole component can be effectively reduced, and transportation is convenient; the component is more attractive in appearance and favorable for architectural modeling.

Description

technical field [0001] The invention relates to a shuttle-shaped anti-buckling support member, which belongs to the technical field of structural engineering. Background technique [0002] Since the Hanshin Earthquake in Japan and the Northridge Earthquake in the United States, buckling-resistant bracing members have gradually been applied in some large-scale building structures due to their excellent energy dissipation and shock absorption performance, and have been greatly promoted in some developed countries. The traditional buckling-resistant bracing member consists of two parts: the inner core member and the peripheral restraint member. Under the action of a small earthquake, the inner core member of the buckling-resistant bracing member remains elastic and is used as a lateral force-resistant member of the main structure; In this case, the core member of the anti-buckling support enters yield first, which plays a role in protecting the main frame, and at the same time ...

AI Technical Summary

Problems solved by technology

As a result, the following disadvantages arise: (1) Excessively large constrained section leads to serious waste of materials; (2) The large volume of concrete in the constrained member leads to excessive self-weight of the member, which makes it difficult for the overall transportation of the buckling-resistant braced member; (3) Excessively large component cross-sectional dimensions may occupy too much building space, and exposed components may affect architectural effects

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